We use functional cookies for a number of reasons, such as keeping the Costain website reliable and secure and to analyse how our site is being used.
Will you accept our use of non-essential cookies?

Yes No Privacy Notice


We shape, create and deliver pioneering solutions that transform the performance of the UK’s infrastructure ecosystem.

Future-shaping strategic consultancy

We work with our customers in their business and investment planning to develop new solutions to meet changing needs, leveraging our deep customer insight, practical expertise and broad range of capabilities.

Consultancy and advisory

Our value-adding consultancy and advisory services are rooted in project delivery experience and leverage our broad range of capabilities.

Digital technology solutions

We engineer and integrate digital solutions into our projects to improve the performance of our infrastructure.

Asset optimisation

We optimise the performance of our customers’ existing infrastructure assets and operational practices by combining our deep customer insight and practical expertise, thereby increasing capacity, improving connectivity, minimising downtime and reducing operating costs.

Complex programme delivery

Our people deliver complex infrastructure projects in a sustainable, efficient and practical way by constantly innovating and working collaboratively.

Improving the safety of roadside engineers with RMAS

Providing a safer, more reliable road network in Cheshire

Keeping London moving